Ethylene glycol, C2H6O2, is a common automobile anti-freeze. What mass of ethylene glycol be added to a 5.0 liter automobilewater cooling system to lower the freezing point to -10°C?

The freezing point of ethanol, CH3CH₂OH, is -117.300 °C at 1 atmosphere. Kf(ethanol) = 1.99 °C/m In a laboratory experiment, students synthesized a new compound and found that when 11.23 grams of the compound were dissolved in 266.2 grams of ethanol, the solution began to freeze at -117.394 °C. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight they determined for this compound? g/mol

When 73.6 g of glycine C2H5NO2 are dissolved in 1250. g of a certain mystery liquid X, the freezing point of the solution is 2.8°C lower than the freezing point of pure X. On the other hand, when 73.6 g of potassium bromide are dissolved in the same mass of X, the freezing point of the solution is 2.6°C lower than the freezing point of pure X. Calculate the van't Hoff factor for potassium bromide in X. Be sure your answer has a unit symbol, if necessary, and round your answer to 2 significant digits.

Camphor, C10H16O, melts at 179.8˚C, it has particularly large freezing point depression constant, Kf = 40.˚C/molal. When 0.186 g of an organic substance of unknown molar mass is dissolved in 22.01 g of liquid camphor, the freezing point of the mixture is found to be 176.7˚C. What is the approximate molar mass of the solute?  Tf= 179.8° C and Kf= 40. °C/molal

The boiling point of chloroform, CHCl3, is 61.700 °C at 1 atmosphere. Kb(chloroform) = 3.67 °C/m In a laboratory experiment, students synthesized a new compound and found that when 14.11 grams of the compound were dissolved in 204.7 grams of chloroform, the solution began to boil at 62.577 °C. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight they determined for this compound ? _____g/mol

When 105.g of glycine C2H5NO2 are dissolved in 1200.g of a certain mystery liquid X, the freezing point of the solution is 4.6°C lower than the freezing point of pure X. On the other hand, when 105.g of iron(III) chloride are dissolved in the same mass of X, the freezing point of the solution is 7.5°C lower than the freezing point of pure X. Calculate the van't Hoff factor for iron(III) chloride in X. Be sure your answer has a unit symbol, if necessary, and round your answer to 2 significant digits.      i=

The boiling point of ethanol, CH3CH2OH, is 78.50°C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in ethanol is estrogen (estradiol).A student dissolves 10.82 grams of estrogen, C18H24O2 (272.4 g/mol), in 158.1 grams of ethanol. Use the table of boiling and freezing point constants to answer the questions below. Solvent Formula Kb (°C/m) Kf (°C/m) Water H2O 0.512 1.86 Ethanol CH3CH2OH 1.22 1.99 Chloroform CHCl3 3.67   Benzene C6H6 2.53 5.12 Diethyl ether CH3CH2OCH2CH3 2.02   The molality of the solution is __________  m.The boiling point of the solution is___________  °C.

1-A sample of pure t-butyl alcohol weighing 6.22 g was found to have a freezing point of 24.7 °C. When 0.543 g of an unknown compound X was added to the t-butyl alcohol, the mixture had a freezing point of 21.3 °C. Calculate the molar mass of compound X. (Kf = 12.8 °C/molal for t-butyl alcohol.)A sample of pure t-butyl alcohol weighing 6.22 g was found to have a freezing point of 24.7 °C. When 0.543 g of an unknown compound X was added to the t-butyl alcohol, the mixture had a freezing point of 21.3 °C. Calculate the molar mass of compound X. (Kf = 12.8 °C/molal for t-butyl alcohol.)   2-What is the rate law expression for the reaction A + B → C, based on the following data

sited [Review Topics] [References] Use the References to access important values if needed for this question. The boiling point of diethyl ether, CH3 CH2 OCH2 CH3, is 34.500 °C at 1 atmosphere. K, (diethyl ether) = 2.02 °C/m In a laboratory experiment, students synthesized a new compound and found that when 10.14 grams of the compound were dissolved in 270.0 grams of diethyl ether, the solution began to boil at 34.714 °C. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight they determined for this compound? g/mol Submit Answer ph_08-30-2....pdf Retry Entire Group a a 9 more group attempts remaining C Previous Next 07 Show all 11:14 PM 9/12/2022

When 56.3 g of glycine (C2H5NO2) are dissolved in 900. g of a certain mystery liquid X, the freezing point of the solution is 3.6 °C lower than the freezing point of pure X. On the other hand, when 56.3 g of iron(III) chloride are dissolved in the same mass of X, the freezing point of the solution is 5.3 °C lower than the freezing point of pure X. Calculate the van't Hoff factor for iron(III) chloride in X. Be sure your answer has a unit symbol, if necessary, and is rounded to the correct number of significant digits. i = x10 5.